Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Nov. 30, 2020	Nov. 30, 2019
Cash flows from operating activities:
Net loss	$ (1,859)	$ (162)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation expense	527	404
Depreciation and amortization	165	193
Net gain from dissolution of Aehr Test Systems Japan	(2,186)	0
Income tax benefit related to dissolution of Aehr Test Systems Japan	(215)	0
Changes in operating assets and liabilities:
Accounts receivable	2,341	(372)
Inventories	(1,067)	(627)
Prepaid expenses and other assets	92	194
Accounts payable	160	389
Accrued expenses	(97)	(438)
Customer deposits and deferred revenue	(117)	139
Income taxes payable	1	4
Net cash used in operating activities	(2,255)	(276)
Cash flows from investing activities:
Purchases of property and equipment	(194)	(123)
Net cash used in investing activities	(194)	(123)
Cash flows from financing activities:
Proceeds from issuance of common stock under employee plans, net of taxes paid related to share settlement of equity awards	365	293
Net cash provided by financing activities	365	293
Effect of exchange rates on cash, cash equivalents and restricted cash	100	(20)
Net decrease in cash, cash equivalents and restricted cash	(1,984)	(126)
Cash, cash equivalents and restricted cash, beginning of period	5,513	5,508
Cash, cash equivalents and restricted cash, end of period	3,529	5,382
Supplemental disclosure of non-cash flow information:
Transfers of property and equipment to inventories	$ 0	$ 112